3360278 - K62 ABS AND HANDBRAKE WARNING LIGHTS BOTH ON

The handbrake lever is released
The handbrake warning light also indicates that the brake fluid level is low and, if it is on at the same time as the ABS warning light, the malfunction of the EBD system.
A parking brake warning light activation command is sent by the switch on the lever to the Body Computer Node, which makes it available to the Instrument Panel Node via the B-CAN network
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the diagnostic equipment and check at the BRAKES NODE:

  • that there are no system/component faults
Continue to Step 2system/component fault Continue as instructed by the tester
2CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keep the tester connected and check the BRAKE NODE for:

  • the operation of the ABS and EBD warning light through active diagnosis
Continue to Step 7warning lights not flashing Continue to Step 6
3ELECTRICAL EQUIPMENT CHECKAll OKProblems metOperation
Check the insulation of the wiring between the handbrake switch and the Body Computer NodeContinue to Step 4Wiring s.c.Renew the wiring
4SWITCH CHECKAll OKProblems metOperation
Check the efficiency of the handbrake lever switchContinue to Step 5Switch broken (always closed to earth)Replace switch Op. 5550D18
5CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment or keep it connected and check the plausibility of the handbrake applied parameter at the BODY COMPUTER NODEContinue to Step 6Parameter not plausibleReplace the Body Computer Node Op. 5505A32
6CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keeping the diagnostic equipment connected, check at the INSTRUMENT PANEL NODE:

  • the operation of the ABS and EBD warning light through active diagnosis
Continue to Step 7warning lights not flashingReplace instrument panel Op. 5560B11
7WARNING LIGHTS OPERATION CHECKAll OKProblems metOperation
Check that the ABS warning light is offCheck that the 'handbrake applied' warning light is offEnd of diagnosisABS or ABS and handbrake warning lights onReplace the ABS unit Op.   3340A12 
ABS or ABS and handbrake warning lights onContinue to Step 3